Covering-machine for magnet-wire.



A. BEUTLER.

CGVERING MACHINE FOR MAGNET WIRE.

APPLICATION rxLnn ROV2B,1904.

908,539. I Patented Jan. 5, 1909.

2 SHEETS-SHEET 1 A. BEUTLER.

COVERING MAGHINB FOR MAGNET WIRE.

APPLICATION FILED NOV.28,1904.

908,539. Patented Jan. 5;1909.

\ W l l A zrzuwm/ 12 UNITED s'rnrnsrnfrnntr OFFICE.

ALBERT BEUTLER, OF CHICAGO, ILLINOIS, ASSIGNOR TO BELDEN MANUFACTURING COM- PANY, OF CHICAGO, ILLINOIS,

A I CORPORATION OF ILLINOIS.

COVERING-MACHINE, FOR MAGNET-WIRE.

Specification of Letters Patent.

Patented Jan. 1:, mos.

Application filed November is, 1904. ,7 sum in. 234,559.

To all whom it may concern:

Be it known that 'I, ALBERT BEUTLER, a citizen of the United States of America, and resident of Chico 0, county of Cook, and State of Illinois, ave invented a new and useful Improvement in Oovering-lllachines for Magnet-Wires, of which the following is a specification.

My invention relates to an improvement in covering machines for magnet wire and has for its object the production of a machine which will not only greatly increase the output for each unit, but eflect a marked economy in the amount of silk, cotton or other covering material required for a given I length of wire.

In the best machines existing at the time of my invention, the speed of revolution of the head, or part carrying the covering aterial, has been limited by practical conition's, to not over 4500 revolutions per minute or therein-bout. By my improved device I am enabled to obtain a speed as high as, or higher than, 13.000 revolutions per minute, and at the same time secure a thinner and more closely wrapped covering of a very uniform character.

In the accompanying drawings which illustrate my invention, Figure 1 1s a view of a complete covering head constructed in accordance with my invention, the bearings and drivin mechanism being omitted from this View; ig. 2 is a view showing particularly the bear-in s and driving mechanisms, as am loyed wit 1 the head shown in Fig. 1, and, ig. 3 is a detail of one of the bearings.

In these drawin s, the numeral 1, refers to a shaftlor spinfie upon which the coverin-g head, 2, is mounted. The head which as a whole is referred to by the numeral, 2, is com scd of a homzontal' plate, 3, of metal, su cicntly strong to resist the breaking stress due to centrifugal action when the s indle is revolving at the high rate of spec contemplated in carrying out my in vention. This plate is ri 'dly secured to the shaft, by a. driving t or otherwise, the shaft projecting a considerable distance above it and formin a bobbin, 4, of insu ating material such ,as silk or cotton, may revolve. These bOlJbfllS 0d insulating material are well knownifi the art and are usually constructed by winding the insulating material on a tube of paste a bearing upon which board, in such manner that the mass of thread binds itself together, thus making the use of heads for the spool unnecessary. This form of bobbin is particularly advanaccount of the act that there is no so erfluous weight to the bobbin, as woul be the case where re lar spools with metal heads are used. T. is is not essential to in invention, however, as an of the wel known ty esof bobbins may he used, rcviding, 0? course, they are constructs of sufiicient strength, and sufiiciently well bat a'nced tostan the high speed to which my invention subjects them.

In applying one of these bobbins to the head, 2, steel thirnbles, 5 and 6, are into the bobbin to assure a proper wearin surface between the bobbin and the shift or spindle, 1. A friction ring,-7, serves to press the bobbin upward y against a block, B Which is put on the upper end of the s ndle. t e upper portion of'the spindle by one or more set screws, 9 the block being pressed down a sufficient distance against the force of the spring, 7, to assure just about the pro er amount of friction to prevent the bob in, 4, from turning too freely on the shaft. It is evident that a certain amount of rotative movement must be allowed for between the shaft andthe bobbin, in order that the insulating material may bevslowly wound of? from the latter. The block, 8, carries a wire eyelet, 10, and a guide, 11, these latter being for the purpose of guidin the insulating material onto the surface 0 the Wire, 12, as it goes up through the hollow spindle.

Arranged near the peri hery of the plate, 3, are two posts, 13 an '13, these ing tubular throu hout their upper portions is indicated in ig. 2. These osts are inmetrically opposed to each 0t er. Secured in similar manner to the plate, 3, and

of the spindle, are the posts 14 and 14, 15' and 15, the posts in each pair being diametrically opposed' and the arran ement being such that all six posts are equa 1y spaced with respect to the circumference of the plate, 3. The posts, 13 and 13', are ehzch provided with an outwardly bent portion tageous in ca ing out my invention on spaced at an equal distance from the centerv The block, 8, is secured in place on near their upper extremities, while the other at the upper posts are straight and slightly shorter, these being the only differences between them. The thread, 16, of insulating material, of which the bobbin 4, is formed, is led in winding 011' of the bobbin, first around the post, 15, then around the post, ,14, and then around the curved lon er post, 13, after which it extends through t e eyelet, 10, and around the guide, 11, at which point it is wrapped onto the slowly movin wire, 12, that is being insulated. The silk strand, 16, is prevented from pulling off the u per portion of the post, 13, by the outward nd portion of that post. Above the guide, 11 1s a conical take-up wheel, 17 around which the insulated wire is passed several times after which it is led to the reel on which it is wound for safe keeping. This take-up wheel 17, revolves slowly,be-, ing so ared that'its eed of rotation will always a function 0 the rotation of the shaft, 1, thereb bringing1 about a certain fixed relation etween e speed of the s indle and that .of the take-u wheel.

his relation is such as to make t e longitudinal movement of the wire 'ust sufiicient to secure an even la onof t e insulation brought about by t e rotative movement of the spindle and head with respect to the Wire- Referring now to the method of supporting and driving the shaft, 1, which carries the head, 18, 19 and 20, are stationary bars or rails formm agl ptprtions of the frame of the machine, e rigidly supported with res ect to each 0 er. These are are .preferab y of cast iron, and of considerable cross section so as to secure great rigidity, andat thesame time afi'ord ample facilities for taking away whatever heat may be gen erated in the bea 21 is a tube, 'preferabl of steel, and ac: curately turned. This tu is screw thread ed at its upper end, to receive the hardened l cone, 22, which is secured in place by a eathered washer, 23, and am nut, 24, or in any other suitable way. ere the feathered washer is used, a longitudinal slot is cut in the threaded portion of the shaft, 20, within which the feather on the washer fits to prevent the washer from rotating on the shaft. The cone, 22, rides upon balls, 25, carriedin a cup or-"ball-race, 26, firmly 'secured within the rail, 19, of the frame of the machine. In a similar manner the lower end of the tube, 21, is screw threaded and carries a cone, 27, secured hy awasher, 28, and jam nut 29, in a similar manner to the 1 structure at the upper end of this tube. This cone, 27, bears against balls, 30, which travel in a cup, 31, rigidly supported by the rail or bar, 20. By the means so far described, this tube, 21 which is in itself a hollow shaft is allowed to rotate freely in the two ball-bearings provided for it, and the power for driving it is ap lied by means of a pulley, 32, located nud ivay between the two bearings so that the strain of the belt or other driving means, is equally borne by the two bearings. I

The spindle, 1,is screw threaded at a point just below the head, 2, for the reception of a done, 33, forming one member of a bearing. This cone is adapted to move on a row of balls, 34,'rolling in a cup, 35. This cup, 35, forming the non-rotative member of the ball bearing, is mounted in the rail or bar, 18, of the frame of the machine, it restin bottom of a chamber, 36, in that ra which chamber is of much larger diameter thanis the cup, 35. Surrounding the cup, 35, and within the chamber, 36, is a ring, 37, of flexible material, preferably rubber, which serves to maintain the approximate alinement of the cup, 35, and other portions of the upper ball bearing with res ect to the two ball bearings on the hollow s aft, 21. This ring, 37 is elastic to such a degree as to allow considerable side motion of the cup, 35, and therefore of the upperportion of the shaft, 1, lateral pressure onthe shaft, 1,,servin to compressthe rubber on the side toward w ich the pressure is exerted, but when the pres sure ceases to be exerted, the resilienc of the rubber brings the bearing and the s aft back to its approximately central position within the c amber, 36. The spindle, 1, is hollow throughout its length, to admit of the bare wire, which is to be insulated, passing us through it to the guide, 11.

his spin le passes entirely throu h the hollow shaft, 21, and. fits very oosely therein. At its lower ,portion it is screw threaded to receive the steel cone, 38, which secured to the spindle, 1, and prevented from rotat' thereon by means of a feathered w er, 39, and jam nut, 40. The cone, 38, fits loosely within the countersunk end of the hollow shaft, 21, so as to allow aslight lateral movement between the two. The rotary movement of the hollow shaft,

21, is, however, imparted to the spindle, 1 by means of the or spline, 41,- carrie on the cone, 38, in the lower portion of the hollow shaftbill.

.By the construction shown and descri the entire" spindle and the head which it carries, is capable of considerable lateral motion, especially at its upper enrki being entirely free from the ho ow shaft, 21, in this respect. The s indle, however, is caused to partake of e rotary motion of the hollow shaft, 21, by meansofgthepin and slot, 41 and 42, v

Under the extremely hi speed of rotation at which I prefer to,-1opera'te this machine the s indie, 1, and its head,-2, is allowed to fin its own natwpal center of rotation on account of the flexibility provided the bearing at the upper portion of this gm w ich engages a notch, 42,

spindle, and of the loose connection between i spindle and the hollow shaft which and these posts-are they are sub this flexible mounting, may be attained without undue wear or excessive heating at the various bearings. By making the posts "13, 14, 15, etc, hollow at their upper por- 'tions, their mass is considerably reduced without greatly impairing their strength,

stand the: great centrifugal force to which being often out at right angles to their nonnal positionsby this force.

I do not wish to limit myself in all rcspects to the exact construction here shown. It is evident that other flexible and resilient means may be employed for holding the upper portion of the spigd-le, 1, in its approximately central position. For instance I have employedooiled springs arran e in suitable manner by the cup, 35, of t is bearing to hold the bearing in approximate olinement, and other. expedients might be resorted to to accomplish. this result. It is obviclus also that the loose connection between the hollow shaft, 21, and the spindle, 1, mi ht be nicdifiedin many respects, and still a low the same degree of flexibility with respect to the upper portion of the'spindle which carries the head. For instance, the lower portion of the spindle, 1, might fit rigidly within the hollow shaft, 21, being nccuratel centered therewith, the proper degree 0 flexibility for the upper portion of the shaft being secured through the :e siliency of the spindle itself.

Havinnow described my invention, what I cl him as new and desire to secure by Letters Patent, is:

1. In. a wire cove-ring machine, a hollow shaft, rigidly secured bearings in which said shaft may rotate, a s indle, a covering head carried by said spin. lo, a flexibly mounted bearing in which said spindle may rotate, and means for imparting the rotary motion of said hollow shaft to said spindle, sub stantially as described.

2. In a wire covering machine, a hollow shaft, means for revolving said shaft at a high speed, a spindle loosely mounted within said hollow shaft, a head carried by said spindle, means for imparting the rotary mot1on of said hollow shaft to said spindle, adapted to allow said spindle to rotate on a different axis from that of said hollow shaft. In a wire covering machine, a covering head and a spindle carrying said head, a flexibly mounted bearing in which said spindle is adapted to rotate, and means loosely connected to said spindle for causing said s indle and head to rotate, substantially as ascribed.

4. In a wire-covering machine, an insulatthus enabled to with ected, posts of other designs" ing head mounted upon a hollow spindle, a single bearing in which said spindle may 1'!)- tate, and a loose engagement between said spindle and a rotating shaft whereby the proper approximate a incment of the spindle issecured and motion is im arted to the spindle, substantially as descri ed.

In'a wire-covering machine, a hollow spindle an insulating head mounted upon one" end of'said hollow spindle, 'a bearing in which said spindle may rotate, and anindependently j ournaled driving means loosely connected to the other end of said spindle, substantially as described.

6 In a wire-coverin machine, a spindle, a covering head carried by one end of said spindle, a bearing in which said spindle may rotate, and a tube inclosing the lower end of said. spindle and limiting its motion, substantially as described.

7. In a wire-covering machine, a hollow spindle through which the wire is fed, a covering head carried on one end of said spindle and rotatiu atherewith, a bearing in which said spind e rotates, a flexible support for said bearing, and a tube inclosing the lower end of said spindle and limiting its motion, substantially as described.

8. In a wireoovering machine, a hollow spindle through which the wire is fed, a covering head carried on one end of said spindle and rotating therewith, a bearing in whih said spindle rotates, an elastic housing for said bearing, and a tube inclosing the lower end of said. spindle and limit ing its motion, substantially as described.

9. In a wire-covering machine, a hollow spindle, a covering head carried at one end of said spindle, a journal upon said spindle and between the ends thereof and in which said spindle may rotate, an elastic housing for said journal, and means for limiting th gyratory motion of the lower end of said spindle and for imparting a rotating motion to said spindle, substantially as described.

10. In a wirecovcring machine. a hollow spindle, a covering head carried by said spindle, u beariu; t] which said spindle may rotate, a. guide with which said spindle may rot: he, means rotating said guide and means for imparting the rotary motion of said guide in said. spindle, substantially as described.

ll. in a covering-nmchine for magnet wire, a hollow spindle, a covering head carried by saidspindle. a bearing in which said spindle may rotate, a guide with which said spindle may rotate. a resilient mounting for said journal whereby a gyratm'y movement of said journal is permitted,and means for rotatinp said guide and said spindle, substantia ly as described.

a covering head carrie spindle, a bearing in which said spindle may rotate, and a rotating guide with which said spindle may rotate, substantially as described.

.machine, a spindle, by one end of said 13. In a wire-cover" [its motion, substantially as described.

14. In a wire-ooverin machine, a hollow spindle through which is 0 wire is fed, a covering head oan'ied on one end of said spindle and rotating therewith, said spindle rotates, said bearing being mounted flexibl and a tube rotatably mounted and inc osing the lower end of said hollow spindle, substantially as described.

a bearing in which 15. In a wire-coverin machine, a hollow spindle through which t e wire is fed, a covering head carried on one end of said spindle and rotating therewith, a bearing in which said spindle rotates, an elastic mounting for said bearing ermitting a gyratory motion" 1 and bearing, and a tubular" to said spind guide rotatably su ported, through which the wire is fed an limiting the ratory motion of the lower end of sai hollow spindle, substantiall as described.

Signed by me at hica 0, county of Cook and State of Illinois in t e presence of two witnesses.

ALBERT BEUTLER. Witnesses:

Eva A. GARLOGK, KnMPs'raR' B. MIILER. 

